Gas hold-up and volumetric mass transfer coefficient in bubble columns under foam control

✍ Scribed by Satoshi Takesono; Masayuki Onodera; Kazuaki Yamagiwa; Akira Ohkawa

• Publisher: Wiley (John Wiley & Sons)
• Year: 1995
• Tongue: English
• Weight: 551 KB
• Volume: 64
• Category: Article
• ISSN: 0268-2575
• DOI: 10.1002/jctb.280640212

✦ Synopsis

Experimental measurements of the gas hold-up and volumetric mass transfer coefficient have been made for bubble columns (BCs) treating various foaming liquids under mechanical and chemical foam control. The gas hold-up and the volumetric mass transfer coefficient in a mechanical foam-control system (BCs with rotating-disk mechanical foam-breakers) were larger than those in a chemical foam-control system (BCs with an antifoam agent added). Correlations for the gas hold-up and the volumetric mass transfer coefficient in BCs under foam control are presented. Comparison of the volumetric mass transfer coefficient between the mechanical foam-control system and the chemical foamcontrol system in terms of the specific power input also demonstrated higher mass transfer performance and saving power requirements for the mechanical foam-control system.